Note: The following table shows Food Network Kitchen's preferred internal temperatures for meat and poultry based on taste and texture. Out of a concern for safety, the USDA recommends higher temperatures for whole cuts of beef and lamb than we do.
In skillet, cook onion in ... Spread mixture over flounder fillets (that you have washed). Roll ... Pour over fillets. Bake in hot 400 degree oven for 25 minutes. Sprinkle with ... with fork. Serves 4.
Cook. Ready In. 1  Preheat oven to 375 degrees F (190 degrees C). 2  Prepare a 13x9-inch baking dish with non-stick cooking spray. 3  Season both sides of flounder fillets with salt. 4  Place into prepared baking dish. 5  Brush 1 tablespoon lemon juice over fillets.